Effects of climate variability on an estuarine green crab Carcinus maenas population

Monteiro, João N.; Pinto, M. M. S. C.; Crespo, Daniel; Pardal, Miguel Ângelo; Martinho, Filipe

doi:10.1016/j.marenvres.2021.105404

Cited by 11 publications

(4 citation statements)

References 76 publications

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“…Carcinus maenas can be found along the entire Portuguese coast, presenting a high population density in the largest estuaries and lagoons from the southeast to the northwest extremes (Elumalai et al 2007;Amaral et al 2009;Monteiro et al 2021). Being a key epibenthic predator that affects estuarine ecological processes via trophic interactions, C. maenas is of utmost ecological importance (Kristensen et al 2008;Amaral et al 2009;Vermeiren and Sheaves 2014).…”

Section: Introductionmentioning

confidence: 99%

Variability in Carcinus maenas Fecundity Along Lagoons and Estuaries of the Portuguese Coast

Monteiro

Ovelheiro

Ventaneira

et al. 2022

Estuaries and Coasts

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Although Carcinus maenas as a species is widely studied, research focusing on fecundity is still scarce. The main objective of this study was to evaluate size-fecundity relationships across different lagoons and estuaries, along the Portuguese coast, to understand how the local environment affects reproductive patterns. Between 2019 and 2020, ovigerous females were collected from the Southern (Ria Formosa and Ria de Alvor), Central (Rio Sado) and Northern regions (Ria de Aveiro) of Portugal, and the fecundity of each female was estimated by counting and weighing eggs. Morphometric relationships (carapace width–egg counting; egg counting–egg weight; body wet weight–egg weight; carapace width–body wet weight) were inferred from 180 egg-bearing females with a carapace width between 26.96 and 61.25 mm. A positive correlation between fecundity and the morphological parameters was observed. Differences in fecundity were found among all systems, from northern to southern Portugal, varying between 22121 and 408538 eggs per female. Furthermore, a regional gradient was observed across regions, with lower temperature estuaries (Ria de Aveiro) displaying an increase in fecundity. The fecundity in Rio Sado was also affected by salinity. Fecundity differences across regions were associated with hydrodynamics, temperature, and salinity differences among systems. No statistically significant differences were observed between Carapace Width—Body Wet Weight regressions performed in each studied system, indicating that, contrary to fecundity, the somatic growth of C. maenas is not affected by latitudinal or environmental conditions.

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Section: Introductionmentioning

confidence: 99%

Variability in Carcinus maenas Fecundity Along Lagoons and Estuaries of the Portuguese Coast

Monteiro

Ovelheiro

Ventaneira

et al. 2022

Estuaries and Coasts

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“…There was a positive relationship between depth, pH, salinity, and turbidity towards BW, CW, and CL. High fluctuation salinity, one of the characteristics of estuary environment, is among the factors that could influence the growth of crabs (Avianto et al 2013;Gong et al 2015;Monteiro et al 2021). In this study, stations were located in shallow waters (depths are between 2 to 3 meters), therefore, a positive relationship between depth and crab size needed further study.…”

Section: Generalized Linear Modelsmentioning

confidence: 86%

Effects of water parameters on population structure of mud crab from Buntal Mangroves, Kuching, Sarawak, Malaysia: A GLM analysis

2022

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Abstract. Shakawi AMHA, Hassan R, Mustapah DS. 2022. Effects of water parameters on population structure of mud crab from Buntal Mangroves, Kuching, Sarawak, Malaysia: A GLM analysis. Biodiversitas 23: 2580-2585. Buntal Mangroves, Kuching, Sarawak, Malaysia, is an area that is abundant with biological resources but contains minimal biodiversity information. Mud crab fisheries by the locals exist on small scales at Buntal Mangroves, but there is a tendency to overfish due to the increasing demand for this resource. The relationship between the population structure of mud crabs and the environmental factors in Buntal Mangroves has not been explored. Therefore, this study aimed to apply the generalized linear models (GLM) for analyzing the population structure of mud crabs with selected water parameters in Buntal Mangroves. Scylla olivacea (Herbst, 1796) has the highest abundance in Buntal compared to S. tranquebarica (Fabricius, 1798) and other types of mud crab. Three GLM with carapace length, carapace width, and body weight as dependent variables were constructed. These GLMs with gamma-distributed response variables indicated that depth, pH, salinity, and turbidity positively affected body weight, carapace width, and carapace length, while temperature had a negative impact on the dependent variables. The results emphasized the importance of adopting the GLM to describe a relationship where the response variable followed a non-normal distribution. The findings provide a basis for future studies at Buntal Mangroves, not only for conservation purposes but also to support the utilization of this valuable resource sustainably.

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“…W), Ria de Alvor (37 • 08 N 8 • 37 W), and Ria Formosa (37 • 03 N 7 • 43 W) (Figure 1). In the Mondego estuary, the population of C. maenas was sampled monthly from June 2003 to December 2018 during the night, at high water of spring tides, using a 2 m beam trawl with one tickler chain and 5 mm mesh size in the cod end (see more details in Monteiro et al 2021) [13]. For the remaining systems, C. maenas populations were sampled monthly from June 2018 to December 2020 using fishing traps deployed for 24 h.…”

Section: Field Work Datamentioning

confidence: 99%

“…Carcinus maenas is also included in the top 100 of the most invasive species by the IUCN [11]. An integral component of its success as an invasive species is the high phenotypic plasticity and its wide range of tolerance to salinity and temperature [12,13]. Across its entire geographic distribution, C. maenas holds significant ecological importance, playing a pivotal role as a key epibenthic species.…”

Section: Introductionmentioning

confidence: 99%

Implications of Warming on the Morphometric and Reproductive Traits of the Green Crab, Carcinus maenas

Monteiro,

Bueno-Pardo,

Pinto

et al. 2023

Fishes

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Understanding the relationship between environmental temperature and the biological traits of organisms is fundamental to inferring the potential impacts of climate change. In the case of marine poikilotherm species, seawater temperature is one of the main driving forces of biological processes, with consequences at higher levels of organization such as population and ecosystem. In this study, we analysed differences in maximum carapace width (CWmax), size at maturation, relative size at maturation, and duration of the reproductive season for the green crab (Carcinus maenas) along a temperature gradient. An extensive review of bibliographic data was performed on studies published between 1962 and 2020, gathering C. maenas data from 55 different populations, spread over 20 degrees of latitude and 14.2 °C of sea surface temperature (SST). In addition, green crab data were collected at five different lagoons and estuaries along the continental Portuguese coast. The relationship between average SST and CWmax, age of maturation, reduction of size at maturation, and duration of egg bearing was analysed to understand the role of SST in driving variation in these C. maenas characteristics across a latitudinal gradient. There was a significant relationship between SST and CWmax for males and SST and CW of females at maturation, respectively. The results extrapolate for each local projected temperature increase caused by climate change and suggest an effect on the morphometric and reproductive traits of C. maenas across regions. These changes comprise an overall reduction in C. maenas body size, an enlargement of the reproductive season, a shortening in the duration of larval developmental time, and a decrease in the relative size of crabs at maturation. Secondary consequences on the fecundity and connectivity of populations are discussed.

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Effects of climate variability on an estuarine green crab Carcinus maenas population

Cited by 11 publications

References 76 publications

Variability in Carcinus maenas Fecundity Along Lagoons and Estuaries of the Portuguese Coast

Variability in Carcinus maenas Fecundity Along Lagoons and Estuaries of the Portuguese Coast

Effects of water parameters on population structure of mud crab from Buntal Mangroves, Kuching, Sarawak, Malaysia: A GLM analysis

Implications of Warming on the Morphometric and Reproductive Traits of the Green Crab, Carcinus maenas

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